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CVE-2025-4999— Linksys FGW3000-AH/FGW3000-HK HTTP POST Request sysconf.cgi sub_4153FC command injection

Quick assessment

Affected
Linksys FGW3000-AH
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linksys FGW3000-AH是美国Linksys公司的一款无线路由器。 Linksys FGW3000-AH 1.0.17.000000及之前版本存在注入漏洞，该漏洞源于HTTP POST请求处理程序对参数supplicant_rnd_id_en处理不当，可能导致命令注入。

CVSS 6.3 · Medium EPSS 7.78% · P94
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I. Basic Information for CVE-2025-4999

Vulnerability Information
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Vulnerability Title
Linksys FGW3000-AH/FGW3000-HK HTTP POST Request sysconf.cgi sub_4153FC command injection
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in Linksys FGW3000-AH and FGW3000-HK up to 1.0.17.000000 and classified as critical. Affected by this issue is the function sub_4153FC of the file /cgi-bin/sysconf.cgi of the component HTTP POST Request Handler. The manipulation of the argument supplicant_rnd_id_en leads to command injection. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
在命令中使用的特殊元素转义处理不恰当(命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Linksys FGW3000-AH 注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linksys FGW3000-AH是美国Linksys公司的一款无线路由器。 Linksys FGW3000-AH 1.0.17.000000及之前版本存在注入漏洞，该漏洞源于HTTP POST请求处理程序对参数supplicant_rnd_id_en处理不当，可能导致命令注入。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linksys FGW3000-AH 1.0.0 -
Linksys FGW3000-HK 1.0.0 -

II. Public POCs for CVE-2025-4999

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III. Intelligence Information for CVE-2025-4999

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IV. Related Vulnerabilities

Same product: FGW3000-AH
Same vendor: Linksys
Same weakness: CWE-77

V. Comments for CVE-2025-4999

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